The President is referring to a program created by Schumer back in 1990. Nearly thirty years later, the immigration lottery system hands out approximately 50,000 American visas to applicants from across the globe.
This is a companion discussion topic for the original entry at https://www.hannity.com//media-room/2017-11-01-schumer-under-fire-trump-rips-chucks-lottery-that-admitted-ny-terrorist/